void test
(
        in float2            coord       : TEXCOORD0,
        uniform samplerRECT  d_data      : TEXUNIT0,
        uniform samplerRECT  d_convFunc  : TEXUNIT1,
        out float4           output      : COLOR
)
{
    float4 data = texRECT(d_data, coord);
    int cx = 0, cy = 0;
    float4 conv = texRECT(d_convFunc, float2(cx, cy));
    output.r = conv.r;
    output.g = conv.g;
    output.b = conv.b;
    output.a = data.a;
}
